Difference between revisions of "DI Electronics Workshop"
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[[File:circuit1.png]] [[File:resistors.png|240px]] | [[File:circuit1.png]] [[File:resistors.png|240px]] | ||
− | * LED - small side = long leg = positive | + | * '''LED''' - small side = long leg = positive |
* Connectors - red wires positive / black wires negative or ground (why GND? GND = grounding for discharge) | * Connectors - red wires positive / black wires negative or ground (why GND? GND = grounding for discharge) | ||
* Resistor - if you didn't have it the LED would blow / it makes sure the led does not draw all of the 5v current / 220 Ohms Resistor - red red brown is 22 *10 | * Resistor - if you didn't have it the LED would blow / it makes sure the led does not draw all of the 5v current / 220 Ohms Resistor - red red brown is 22 *10 | ||
* Resistance is calculated in ohms. So how do we figure out the current? The Lab power supply has a switch for amps/volts you can see its about 0.01. | * Resistance is calculated in ohms. So how do we figure out the current? The Lab power supply has a switch for amps/volts you can see its about 0.01. | ||
* '''V=IR''': See more about [[Ohm's Law]] | * '''V=IR''': See more about [[Ohm's Law]] | ||
+ | * Using Multimeter: solid line dc, wavy line ac, turn to 20 |
Revision as of 11:43, 28 October 2013
- LED - small side = long leg = positive
- Connectors - red wires positive / black wires negative or ground (why GND? GND = grounding for discharge)
- Resistor - if you didn't have it the LED would blow / it makes sure the led does not draw all of the 5v current / 220 Ohms Resistor - red red brown is 22 *10
- Resistance is calculated in ohms. So how do we figure out the current? The Lab power supply has a switch for amps/volts you can see its about 0.01.
- V=IR: See more about Ohm's Law
- Using Multimeter: solid line dc, wavy line ac, turn to 20